Elon Musk made a South Park joke at his Mars colonization announcement

How will Elon Musk and SpaceX fund its ambitious plan to go to Mars? The question was a big one coming into today's announcement, and Musk opted to suggest some kind of "public-private partnership" would generate the necessary cash. But first, he made a South Park joke.
When talk turned to funding, Musk moved along to a slide that started with "Steal Underpants" and ended with "Profit." (In between: "Kickstarter.") The slide was a reference to a season two episode of South Park, w